tlw-char-stream.lisp - clic - Clic is an command line interactive client for gopher written in Common LISP
 (HTM) git clone git://bitreich.org/clic/ git://hg6vgqziawt5s4dj.onion/clic/
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       ---
       tlw-char-stream.lisp (3652B)
       ---
            1 ;;; -*- Mode: LISP; Syntax: COMMON-LISP; Package: FLEXI-STREAMS; Base: 10 -*-
            2 ;;; $Header: /usr/local/cvsrep/flexi-streams/lw-char-stream.lisp,v 1.1 2008/05/23 14:43:09 edi Exp $
            3 
            4 ;;; Copyright (c) 2005-2008, Dr. Edmund Weitz.  All rights reserved.
            5 
            6 ;;; Redistribution and use in source and binary forms, with or without
            7 ;;; modification, are permitted provided that the following conditions
            8 ;;; are met:
            9 
           10 ;;;   * Redistributions of source code must retain the above copyright
           11 ;;;     notice, this list of conditions and the following disclaimer.
           12 
           13 ;;;   * Redistributions in binary form must reproduce the above
           14 ;;;     copyright notice, this list of conditions and the following
           15 ;;;     disclaimer in the documentation and/or other materials
           16 ;;;     provided with the distribution.
           17 
           18 ;;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR 'AS IS' AND ANY EXPRESSED
           19 ;;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
           20 ;;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
           21 ;;; ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
           22 ;;; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
           23 ;;; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
           24 ;;; GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
           25 ;;; INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
           26 ;;; WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
           27 ;;; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
           28 ;;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
           29 
           30 (in-package :flexi-streams)
           31 
           32 (defclass flexi-char-output-stream (flexi-output-stream)
           33   ()
           34   (:documentation "This class is for output streams where the
           35 underlying stream is bivalent but not binary.  It exists solely for
           36 the purpose of optimizing output to binary streams on LispWorks.  See
           37 WRITE-BYTE*."))
           38 
           39 (defclass flexi-char-input-stream (flexi-input-stream)
           40   ()
           41   (:documentation "This class is for input streams where the
           42 underlying stream is bivalent but not binary.  It exists solely for
           43 the purpose of optimizing input to binary streams on LispWorks.  See
           44 READ-BYTE*."))
           45 
           46 (defclass flexi-char-io-stream (flexi-char-input-stream flexi-char-output-stream flexi-io-stream)
           47   ()
           48   (:documentation "This class is for bidirectional streams where the
           49 underlying stream is bivalent but not binary.  It exists solely for
           50 the purpose of optimizing input and output from/to binary streams on
           51 LispWorks.  See READ-BYTE* and WRITE-BYTE*."))
           52 
           53 (defmethod initialize-instance :after ((flexi-stream flexi-output-stream) &rest initargs)
           54   "Might change the class of FLEXI-STREAM for optimization purposes.
           55 Only needed for LispWorks."
           56   (declare #.*standard-optimize-settings*)
           57   (declare (ignore initargs))
           58   (with-accessors ((stream flexi-stream-stream))
           59       flexi-stream
           60     (unless (subtypep (stream-element-type stream) 'octet)
           61       (change-class flexi-stream
           62                     (typecase flexi-stream
           63                       (flexi-io-stream 'flexi-char-io-stream)
           64                       (otherwise 'flexi-char-output-stream))))))
           65 
           66 (defmethod initialize-instance :after ((flexi-stream flexi-input-stream) &rest initargs)
           67   "Might change the class of FLEXI-STREAM for optimization purposes.
           68 Only needed for LispWorks."
           69   (declare #.*standard-optimize-settings*)
           70   (declare (ignore initargs))
           71   (with-accessors ((stream flexi-stream-stream))
           72       flexi-stream
           73     (unless (subtypep (stream-element-type stream) 'octet)
           74       (change-class flexi-stream
           75                     (typecase flexi-stream
           76                       (flexi-io-stream 'flexi-char-io-stream)
           77                       (otherwise 'flexi-char-input-stream))))))